Compare two versions of a contract without uploading either one.
A redline is a review task, which means both drafts are sensitive, and most online compare tools want you to upload both. KeptPDF lines up the two versions and marks every change, down to the word, all in your browser. Neither file leaves your device. Give the redline a review before you rely on it.
Two drafts of a contract are twice the confidential content.
Comparing versions means both the old draft and the new one are in play, and both are sensitive. Uploading them to a third-party compare service hands a counterparty's terms, your pricing, and your edits to a server you do not control.
Comparing two confidential drafts should not require uploading both of them to someone else's server.
KeptPDF extracts and diffs the text of both files entirely in your browser, then marks every change. There is no upload step, so neither version is ever part of a network request. You can verify it yourself in the network tab.
Reading two versions side by side by eye, a single changed word in a dense clause is easy to miss.
A word-level diff marks every addition and deletion, both files compared in your browser.
What KeptPDF shows you
A word-level diff, not a vague "something changed." Every edit is marked so you read the delta instead of re-reading the whole agreement.
Every change, down to the word
KeptPDF runs a word-level diff, the kind code review tools use, so a single swapped word in a dense clause stands out. Additions show in green, deletions in red.
Side by side, across every page
The two drafts sit next to each other with synced scrolling, so you read each change in the context of the clause around it.
The edits that change a deal
A changed number, a "shall" flipped to "may", a deleted carve-out: the diff surfaces the small wording moves that change what a contract means.
A redline you can keep
Download the comparison as a redline PDF with the changes marked, so there is a record to file or send on. A scanned draft needs a text layer first, so OCR an image-only copy before comparing.
How to compare two versions of a contract
Three steps, entirely on your device. Neither file is uploaded.
Open the first contract
Drop the original onto the page. It loads into your browser, and nothing is sent anywhere.
Add the version to compare
Drop in the second file. KeptPDF extracts the text from both and lines them up.
Read every change, side by side
Additions show in green, deletions in red, down to the word, with synced scrolling. Step through them, or download the redline as a PDF. Give it a review before you rely on it.
Every change, side by side. Neither file uploaded.
Word-level diff
KeptPDF extracts the text from both contracts and runs a word-level diff, the kind code review tools use, so a single changed word in a dense paragraph still stands out. Additions show in green, deletions in red.
Side by side, every page
The two versions sit next to each other with synced scrolling, so you read each change in the context of the clause around it instead of flipping between two tabs.
Never uploaded
There is no upload step. Both contracts are compared entirely in your browser, so neither file is ever part of a network request or sits on anyone else's server.
Free, no account
Compare free with no account, no daily limit. Pro ($29/month) handles larger files. A scanned contract needs a text layer first, so run OCR before comparing.
More for working with contracts
Redact a clean copy to share, or sign the final, all on your device.